bug#34082: cal-tex.el

[Glenn Morris]

Colin Baxter wrote:

> emacs -Q <RET>
> M-x calendar <RET>
> M-x cal-tex-cursor-day <RET>
> M-x tex-buffer <RET>
>  ---> Buffer is not associated with any file
> M-x tex-print <RET>
>  ---> No appropriate '.dvi' file could be found
>
> However, if the buffer 'calendar.tex' is saved to a file then we
> can proceed using M-x tex-compile <RET>, etc.
>
> Perhaps the user might be given instructions at the head of the buffer
> 'calendar.tex' that are different from those presently seen.

tex-buffer is supposed to support this usage:
  "Does not save the buffer, so it's useful for trying experimental versions."

However, it seems that this does not work since Emacs 22.1.

A quick bisect points to b2272f6.